ASTROSAT CZTI

Data Quality Report

Orbit 20171118_G08_031T01_9000001702_level2

Creation date: 2018-01-09T05:53:53.227923
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_031T01_9000001702cztM0_level2_bc.evt modeM0/AS1G08_031T01_9000001702cztM0_level2_quad_clean.evt
Size (bytes)1,870,413,120520,099,200
Size1.7 GB 496.0 MB
Events in quadrant A14,105,1703,194,578
Events in quadrant B13,968,7733,197,145
Events in quadrant C8,779,0123,222,766
Events in quadrant D16,647,1652,970,467

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09440
B09440
C09440
D09440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0530
B0530
C0530
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01194460
B01148220
C0940700
D01215350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4611816173.506223%
B4611819584.245631%
C461181760.381630%
D4611827515.965133%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 51539 46120 17 17 0.03% 0.04%
B 51539 46120 43 43 0.08% 0.09%
C 51539 46121 1 1 0.00% 0.00%
D 51539 46118 819 819 1.59% 1.78%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 5 4629631 9491.83 2240 2193 487.5
A 1 162 499723 1020.54 2240 2193 487.5
A 1 178 73159 145.57 2240 2193 487.5
B 4 239 3155885 7323.02 2264 2198 430.7
B 3 64 1035811 2400.1 2264 2198 430.7
B 11 51 315471 727.44 2264 2198 430.7
C 9 54 47294 92.37 2227 2187 488.3
C 13 61 13204 22.56 2227 2187 488.3
C 12 4 12445 21.01 2227 2187 488.3
D 1 52 6374467 12385.21 2172 2091 514.5
D 8 195 315070 608.3 2172 2091 514.5
D 10 199 291151 561.81 2172 2091 514.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter